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UI for ASP.NET AJAX Forum
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This sticky thread lists known issues and breaking changes introduced in the UI for ASP.NET AJAX releases.


Q3 2011 (Version number: 2011.3.1115)

Problem: When adding items to OData-enabled controls (RadMenu, RadTreeView, RadListBox, RadComboBox) through design time erroneous markup is applied to the control:

<telerik:RadListBox runat="server" ID="RadListBox1">
    <Items>
    </Items>
    <WebServiceSettings>
        <ODataSettings InitialContainerName="">
        </ODataSettings>
    </WebServiceSettings>
</telerik:RadListBox>

Please note the added ODataSettings section. It will cause JavaScript errors on the page.

Solution: Remove the ODataSetting section and the issue will vanish. The problem is also fixed in the Q3 SP1 release, version number 2011.3.1305
Rumen
Telerik team
 updated answer on 11 Apr 2025
1 answer
727 views

When I run my project I'm getting this error

Could not load file or assembly 'Telerik.Web.UI' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)

In my web.config I checked that the version in the web.config is the same as the version I'm using in references

<assemblyIdentity name="Telerik.Web.UI" publicKeyToken="121fae78165ba3d4" culture="neutral" />
        <bindingRedirect oldVersion="0.0.0.0-2020.2.617.45" newVersion="2020.2.617.45" />

 

Vessy
Telerik team
 answered on 22 Oct 2021
2 answers
17 views

Good afternoon,

I'm currently running Telerik UI for ASP.NET AJAX R3 2023.  I am using the RadAsyncUpload with a AsyncHandler.ashx to copy the file to a RadUploadTemp on a file share.

This has been working perfectly for ages but recently large file updates have been failing e.g. a 2.1 GB file failing at 61%.  I'm being told this is due to a TCP Zero Window issue.

I assumed the chunked upload mechanism mitigates the issues caused by TCP window size restrictions, which can cause slowdowns or failures when uploading very large files in a single request. I am setting the upload ChunkSize value to 4194304.

I have the following settings in web.config:

  <system.web>    
    <httpRuntime maxRequestLength="2097151" executionTimeout="18000"/>
  </system.web>

  <system.webServer>
    <security>
      <requestFiltering>
        <requestLimits maxAllowedContentLength="4294967295"/>
      </requestFiltering>
    </security>
  </system.webServer>

Have you got any ideas as to why it might be failing for larger files, or what I can do to the configuration to prevent the TCP Zero Window error by pausing data transmission until the receiver is ready to accept more data?

Kind regards,

Richard

Rumen
Telerik team
 answered on 30 Apr 2025
1 answer
11 views
Hi, I am using Telerik RadEditor, and some of the localization text is missing for the table style builder window. I have followed this post, and some localizations are still missing. Can you share the latest localization files for the en-US culture here?

I have attached the screenshot of the issue.




Rumen
Telerik team
 answered on 29 Apr 2025
2 answers
12 views

Hello,

I have a RadGrid embedded in a RadTabStrip. This is defined in a UserControl with a RadAjaxManagerProxy. It displays content from a DB server. I have a GridButtonColumn that is defined below. Everything works fine except that when I try to delete a row by clicking on the icon it won't work initially. A second click results in a callback to the server's RgAttachments_ItemCommand appropriately. This behaviour happens consistently. I took a look at the generated code and noticed a difference in the button's clientside onclick handler

 

This following generated javascript works

if(!$find('ctl00_MainContent_ctlRqstAttachments_RgAttachmentRevision').confirm('Are you sure you wish to delete this file attachment?', event, 'ctl00_MainContent_ctlRqstAttachments_RgAttachmentRevision', 'Delete'))return false;__doPostBack('ctl00$MainContent$ctlRqstAttachments$RgAttachmentRevision$ctl00$ctl14$ctl00','')

This generated code doesn't

if(!$find('ctl00_MainContent_ctlRqstAttachments_RgAttachmentRevision').confirm('Are you sure you wish to delete this file attachment?', event, 'ctl00_MainContent_ctlRqstAttachments_RgAttachmentRevision', 'Delete'))return false;__doPostBack('ctl00$MainContent$ctlRqstAttachments$RgAttachmentRevision$ctl00$ctl12$ctl01','')

 

The column in question

                            <telerik:GridButtonColumn HeaderText="Delete" ConfirmText="Are you sure you wish to delete this file attachment?" ConfirmDialogType="RadWindow" ButtonCssClass="btn btn-outline-danger btn-sm rounded" ConfirmTitle="Delete" ButtonType="FontIconButton" CommandName="Delete" Text="Delete" UniqueName="DeleteColumn" ItemStyle-ForeColor="Red">
                                <ItemStyle HorizontalAlign="Center"></ItemStyle>
                            </telerik:GridButtonColumn>

 

Any help to resolve this is greatly appreciated

Gavin
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Rank 1
Iron
 answered on 28 Apr 2025
1 answer
9 views

I'm experiencing an issue with custom button icons not displaying in the RadEditor ribbon bar. I've added a custom button that functions correctly, but the icon specified in the ImageUrl property does not appear on the UI.

Issue Details:

I've added the following custom tool to the RadEditor toolbar:

xml
<tool name="File" size="large" text="File Add" ImageUrl="~/Assets/images/add.png"/>

The button appears in the ribbon bar and the functionality works as expected, but the icon is not visible.

Troubleshooting Steps Already Taken:

  1. Verified the image exists at the specified path
  2. Tried both relative (~/) and absolute paths
  3. Checked for case sensitivity in the ImageUrl attribute (tried both ImageUrl and imageUrl)
  4. Specified width and height attributes for the image

    Questions:

    1. Is there any specific requirement or setting I'm missing for custom icons in the ribbon bar?
    2. Could there be an issue with how custom icons are rendered in the ribbon bar versus standard toolbar?
    3. Are there any size limitations or format requirements for custom icons in the ribbon?
    4. Is there a different approach recommended for adding custom icons to ribbon bar buttons?

     

    Rumen
    Telerik team
     answered on 28 Apr 2025
    4 answers
    320 views

    Add marker clustering support to the (kendo) Map control as seen in https://developers.google.com/maps/documentation/javascript/marker-clustering

    This functionality already exists in the Telerik Silverlight Map control and it would be great to see similar functionality here.
    Here's an example of what I want: http://demos.telerik.com/silverlight/#Map/Cluster

    What I am looking for is the same sort of 'pretty' cluster behaviour as when you zoom out of some pins you just see a number of how many pins are below this.
    In the example I am trying to replicate is that if a pin in that cluster is red (RAG status) then the top layer symbol should also be red. If this was not a network monitoring system you would ideally see a sea of green markers, if one node/pin went down/red, they the top most image should be red to draw your attention to it and then zoom in.
    How can that be done in (KendoUI) Mapping?

    Mar
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    Rank 1
    Iron
     answered on 24 Apr 2025
    1 answer
    10 views

    I have a RadAutoCOmpleteBox that is bound by a Web Service but I have client filtering set to true.

    Is it possible to rebind the web service client side? I only wish to do this so I can reset the where clause on the select statement based on a client selection in another field but I only want this to happen client side and not server side.

    Is there a way to fetch the web service again?

    Attila Antal
    Telerik team
     answered on 24 Apr 2025
    1 answer
    10 views

    I've set

    <telerik:GridTemplateColumn ... ShowFilterIcon="True">

    but no icon appears when I apply a filter. Conversely, a sort icon does appear when I apply a sort.

    Sorting is achieved by clicking on the column header, but for filtering, I am using a header context menu. Is that the source of the problem?

    • If so, how can I have the filter icon show in the column header when filtering is applied via a header context menu?
    • If not, why else might the filter icon now display when filtering is applied?
    Vasko
    Telerik team
     answered on 23 Apr 2025
    1 answer
    11 views

    I have created an application within Visual Studio 2019 and using c#.

    The project has a page which uses a telerik RadGrid. It is populated on page load and I have filtering enabled on 3 of the columns. I have set the aspx for the columns to have AutoPostBackOnFilter="true" AllowFiltering="true"  ShowFilterIcon="true"

    The runs perfectly when ran in development environment but when I publish my application to the web server the filter does not work at all. Nothing happens if I tab out of the filter text box or if I select anything from the filter icon.

    Can anyone advise what the issue could be please? I am using Telerik.web.ui version 2024.1.131.45

    Thanks

    RR

    Vasko
    Telerik team
     answered on 18 Apr 2025
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